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2

Follow those instructions for single-user-mode, then when you are done, type "exit" and copy some of the first few lines of the output - on paper if you need to. I'm mentioning this because I skipped the exit step a few times, but more interesting things might come up there. When I brought the lines with me and showed them to the Apple tech (genius) he ...


1

Yosemite startup hanging at 50% is something we've seen a good few times, and a couple of users got so fed up with it being a recurring issue they asked for a roll-back to Mavericks. The first thing to try is boot into single-user mode (Command + s at startup) and run a disk check with the command /sbin/fsck -fy. Once that's done try starting in Safe Boot ...


0

It could be the phone hardware is not recognizing the battery capacity correctly. Back up your phone to a computer. Do not only a factory reset but after that plug your phone back in to iTunes and act like you're going to reboot your phone while hooked up to iTunes. Once you see the Apple appear let go of the lock button but continue to hold the home ...


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Apple tells me that my battery had (physically) expanded which, as I understand it, causes the machine to stop using it as a safety precaution. I had the battery replaced which cost me $250 plus labor.


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Well, I'll provide an answer to my own question, tested on Yosemite but not extensively. This is bash code: #!/bin/bash humantime () { printf -v $1 "%dh%02dm%02ds" $(($2/3600)) $((($2/60)%60)) $(($2%60)); } #unplugged=`pmset -g log | grep 'Summary- \[System: DeclUser.*\] Using Batt' | tail -1 | cut -f1,2 -d' '` unplugged=`syslog -u -k Sender loginwindow | ...


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I do not know of any software solution, but there is a hardware solution. Use a piece of tape and cover the middle pin on the Magsafe plug.


0

You are seeing the (very obvious) low-battery indicator. The battery does not have enough power to boot the device. A first-generation iPad is at least 4 years old - if it has been used regularly the battery has likely done enough cycles that it needs to be replaced. If it has been left on the shelf for extended periods the battery has discharged itself - ...


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All iOS devices do that after they have been completely discharged. If it does not boot up with in 5-10 minutes of being plugged in, then it could be an indication of hardware failure. The battery is likely not accepting a charge.


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Here you find an extensive list with various links to AHT images. The direct links to the AHT of your model are: 13" MacBookAir3,2 or 11" MacBookAir3,1. To copy the .diagnostics folder, mount the dmg and enter for the MacBookAir3,2 AHT: sudo cp -R /Volumes/AHTBOne/System/Library/CoreServices/.diagnostics /System/Library/CoreServices or for the ...


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Your AHT feature will have been lost when you upgraded to Yosemite. You can restore it by inserting the Applications Install disc that was supplied with your computer and typing the following command, putting in the actual name of the disc where indicated... sudo cp -R /Volumes/[name of disc]/System/Library/CoreServices/.diagnostics ...


-3

reset SMC look up how to reset SMC on macbook's without removable battery


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Either you're using your laptop heavily or you need to upgrade your charger with higher power (e.g. from 65Watt to 85Watt) so it can charge faster. This usually happens when you take/borrow charger from other MacBook Air and you'll try to charge your MacBook Pro (which could have Core i7 instead of i5). You can click on Battery icon to see which apps are ...


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There's also an app designed to test your battery: http://batteryscore.com/ https://itunes.apple.com/app/batteryscore-easy-way-to-benchmark/id793023941?ls=1&mt=8 The score it gives isn't the easiest to interpret, but you can compare it against other scores.


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When your phone is near-dead, go to Settings > General > Usage and see how long your battery has lasted. Then check how long your phone should have lasted. I use the app "System Status" by Jiri Techet to tell me that information, but you can look it up online or use another app.


1

So the gel containing battery acid has leaked out and dried up. You need to make it muddy again to be able to remove it, since dry removal is not possible. There are multiple methods to do that described here. (Vinegar, Lemon juice, and others). Example: Mix water and baking soda into a thick paste. Start with about a teaspoon of baking soda and add ...


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That is your battery it self, acting up. Following the SMC reset I would recommend a single (one time) deep discharge. The deep discharge will reset the Battery values reported. Just leave your computer running till it shuts down by it self due to low power.


2

Assuming it is now charged… Hold Home & Power buttons for at least 45 seconds, see if it starts up normally. If not… Plug your iPad's USB cable into a computer with iTunes. Hold down the Home button [keep holding] and connect to your iPad. Keep holding the Home button until you see a screen telling you to connect to iTunes. iTunes should show you ...



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